Optimize getting web resources

[amvanbaren]

This would remove the need to download the whole extension package to extract a file from it.

• Create extension package manifest that contains for each entry: name, offset, compressedSize, compressionMethod.
• Use Apache commons-compress to get accurate offset data.
• Use offset and compressedSize to download specific byte range instead of the whole ZIP archive.
• Decompress the downloaded byte range using compressionMethod.
• Cache the decompressed byte range.

Extra: use Accept-Encoding request header to check if the server can directly redirect to Azure Blob Storage using Range and Content-Encoding headers.

[kishansinghifs1]

Can I work on this issue?